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C. A. WENDELL AND S. B. SHUTTS.

GAS BURNER.

APPLICATION FILED NOV. 21. 1917.

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mamsm C. A. WENDELL AND S. B. SHUTTS.

GAS BURNER.

APPLICATION FILED NOV. 21, 1912.

'1 ,3 1 3, 360. Patented Aug. 19, 1919 W3 I 2 SHEETSSHEET 2. 1

A77 B/VEY srA'rEsrATENT OFFICE.

cm A. WENDELL, or RocxvILm-i cEN'rEn, New Yonx, AND SAMUEL .B. snu'r'rs, or

- nanmmn, PENNSYLVANIA.

GAS-BURNER.

Specification of Ietters Patent.

Patented Aug. 19, 1919.

Application filed November 21, 1917. Serial No. 203,228.

To all whom it may concern:

Be it known thatwe, CARL 'A. WENDELL and SAMUEL B. SI-IU'TTS, citizens of the United States, residing in Rockville Cen- -.ter, Long Island, New York, and Marietta,

provide improved means forobtaining a.

complete admixture of the gas and air to improve the combustible qualities of the mixture. A further object is to provide a safety device in addition to the gas valve to positively prevent the posslbility of gas leaking past said valve and thereby reaching the interior of the furnace while workmen are engaged in repairing or cleaning the furnace. A still further object is to provide a structure having adjustable features whereby the velocity and the nature of the mixture can be controlled, and which structure is simple in construction and inexpensive to manufacture, yet, eflicient in its operation. To attain theseobjects our improved burner consists essentially of a gas conductor in the form of a hollow casing having a converging outlet. sages formed therethrough and provided with means for regulating the air entering said air box extends into the interior of the gas conductor and hasa converging outlet terminating at a plane to the rear of the outlet of the gas conductor. The gas conductor is provided with a bell valve having clamping means whereby itinay be' locked secured in place to seal the inletopening to said gas conductor. y

The construction and operat1on of our improved burnerwill be more clearly un derstOQd by reference o the accompanying An air box having gas pasdrawings in which like characters refer to like parts in the several views and in which,

Figure l is a staggered longitudinal .sectional view through the center of the gas inlet and the center of one of the gas outlets, being taken substantially at the plane indicated by'the line 11 ofFig. 3, the bell valve being shown in its open position; i

Fig. 2 is a vertical sectional view of the upper portion of our burner on the line 22 of Fig. l. The valve however in this view is shown in ltsclosed position and the dead- Fig. 4' is a detail perspective view of the air box showing the gas passages therethrough and the means for regulating the volume of air passing into said air box;

Fig. 5 is a cross-sectional view on the line 55 of Fig. 1. The burner casing indicated generally by the numeral 1 is flared at its upper end 2 and is provided with a flange 3 to which is secured a valve casing 4 having a flange 5, said valve casing being secured to the flange 3 by suit-able bolts 6. Under normal operating conditions a gasket 7 having a gas opening 8 therein is interposed between the flanges 3 and 5. However at certain times a deadplate 9 shown in Fig. 2 is interposed between flanges 3 and 5 to seal the inlet opening 10 in the gas conductor. casing 4 is provided on its interior with a valve seat 11 to cooperate with a bell valve 12 which valve is suspended by links 13 from an arm 14 secured to. a rock shaft 15, which arm carries at its free end a toothed sector 16 meshing with a pinion 17 which is keyed to a shaft 18.

The rotation of The valve the shaft 18 will obviously raise or lower the-bell valve 12 as required. To lock the bell, valve in various adjusted positions an arm 19, Fig. 3, is secured-to the shaft 18 and carries a spring clamp plate 20. A

thumb screw 21 passes freely through the .clamp plate-20 and is threaded into the arm 19. A fiat plate 22 in the shape of a sector is interposed between the arm 19 and the spring plate and is secured by a bolt 23 at one end to the valve casing 4 and at its opposite end it"is similarly secured to a bracket 24 which in turn is fastened to the flange 5 of the valve easing.

From this construction it is clear that the rotation of the arm 19 will cause the pinion 17 and the sector 16 to raise or lower the valve 12 as may be desired and by means of the clamp 20, thumb screw 21 and sector plate 22, the valve may be securely locked in any desired position.

Extending downwardly from the upper portion 2 of the gas conductor, is a neck 25 which is flared outwardly as shown in Fig. 3 and terminates in a forwardly extending nozzle portion 26 in which the chambers 27 and 28 (Fig. 5) are formed, these chambers being separated from each other by a baflie wall 29. At the rear of the chambers 27 and 28, apertures 30 and 31 (Fig. 3) surrounded by rearwardly extending ribs 32 are formed and the air boxes 33 project through these apertures and into the chambers 27 and 28 as shown in Figs. 1 and 5.

The air boxes, which are of novel construction, are in the present embodiment built up of sheet metal and are rectangular in cross-section, the outlet apertures 34 being of restricted area as compared with the typical sectional area thereby increaslng the velocity of the air as it passes out of the air box. At the rear end the air boxes are flared as shown at 35 and flanges 36 are formed thereon to which are secured the guide plates 37 having apertures 38 formed therein A plate 39 having apertures 40 of substantlally the same dimensions as the apertures 38 1s slidably mounted between the plate 37 and the flange 36. It is clear that by sliding the plate 39 the volume of air entering the air box may be variably controlled.

At points intermediate the end 34 and flange 36, gas passages 41 are provided in the embodiment illustrated. These passages are in the form of conduits 42 constructed of sheet metal which are flanged over at 43 and suitably secured to the top and bottom walls of the air box. With this construction, it will be readily seen that the air may pass into the air box through the apertures 38 and around the conduits 42 and out of the restricted apertures 34 as shown by the dotted arrows in Fig. 1, while the gas may pass through the passages 41 in conduits 42 and around the top and bottom of the air box as indicated by the arrows shown in full lines, Fig. 1. At a plane between the end of the air box and the converging outlet 44 of the gas conduits, the currents of gas and air will meet and due to the gas passages through the air box and the gradually decreasing area and the high velocity of the gas and air a thorough admixture of said gas and air will take place thereby producing a highly com bustible mixture.

By adjusting the air box longitudinally it will be clear that the area of the space through which the-gas must pass may be either increased or decreased according to whether the air box is moved backward or forward. It follows that an increase or decrease of the area of the space through which the gas flows will naturally cause a corresponding variation of the velocity of the gas passing from the outlet 44 of the burner.

The air box is supported on screws 45 threaded into the casing of the gas conductor by means of which the position of said air box may be adjusted vertically. A longitudinal ad ustment of the air box may be obtained by sliding the same in or out as varying requirements demand. When the proper adjustment is obtained the air box may be cemented or luted into place as shown in Fig.1. The cement or binder used to hold the air box in place is such that it can be easily removed when adjustment is necessary.

Though we have described with great particularity of detail certainspecific embodiments of our invention, yet it is not to be understood therefrom that the invention described. Various modifications thereof in detail may be made by those skilled in the art without departure from the invention as defined in the followingclaims.

What we claim is:

1. A gas burner comprising a gas conductor including a chamber having a converging outlet, a valve for controlling the flow of gas to said chamber, a deadplate adapted to be located below said valve to seal the inlet to said gas conductor and means for mixing air with said gas.

2. A gas burner comprising a gas conductor including a chambered casing having a converging outlet, means for controlling the supply to said gas conductor, an air box within said casing for introducing air into said gas conductor, said air box having gas passages therethrough and being arranged for movement toward and away from the said converging outlet to vary the area thereof.

3. A gas burner comprising a gas conductor including a chambered casing having an outlet means for controlling the supply to said gas conductor, an air box consisting of an independently removable member having gas passages therethrough, said air box having a converging portion projecting into said as conductor and being adjustable in the direction of the flow of gas and also substantially at right angles thereto to vary the size of the said gas outlet.

4. A gas burner comprising a gas conduetor including a chambered casing having a lation to said converging outlet and then converging outlet, an air box having gas fixedly secured in place.

passages therethrough and provided with In Witness whereof we have hereunto 10 means for regulating the amount of air passsigned our names.

ing therethrough, said air box being con- 1 structed as a separate removable unit and CARL A. WEN DELL.

arranged to be initially adjustable with re- 1 SAMUEL B. SHUTTS. 

